Analysis And Comparison Of The Properties Of Two Arc Steel Bar Energy Dissipation And It's Application Research

With the improvement of economy,technology and people's requirement for space,the large-span spatial structure has been developing rapidly in recent decades.The space structure can be divided into many kinds,of which the reticulated shell structure has both the rod and the thin shell structure,because it has the advantages of good leaping ability,light self weight,convenient construction,rich appearance and so on.It has been widely used in large public space architecture.With thedevelopment of material technology and construction technology,the development trend of latticed shell is bigger span,thinner and more complex shape.To meet these trends,how to ensure its stability and seismic performance is becoming more and more important.The application of energy dissipator is undoubtedly an important way to solve this problem.In many energy dissipator,metal energy dissipator has great research value because of good deformation and energy dissipation after the metal wear.The performance of two new energy dissipation devices suitable for latticed shell structures is studied in this paper.The energy dissipation characteristics of the reticulated shell structure are analyzed by using ANSYS finite element software,and the influence on the stability and seismic performance of the reticulated shell structure is also studied.The main contents of this paper are as follows:1.According to two new energy dissipation devices suitable for lattice shell structures,two sets of specimens were made and tested for low cycle load performance.2.The finite element model of the experimental specimen is set up in the finite element software.Under the same loading system,the performance of the energy dissipator is analyzed.The calculation results are compared with the experimental data.On this basis,the influence of the diameter and the arc of the arc steels rod to the energy dissipator skeleton and the parameters of the hysteresis curve is analyzed,and the fitting is also fitted Relate formulas.3.We build a single layer cylindrical shell with FP type,and analyze the modal and stability characteristics of the two kinds of energy dissipator.4.The time history analysis of cylindrical lattice shell under earthquake action is studied,and the influence of damper on the seismic response of the reticulate shell is studied.